FEIFEI ZHANG

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JINGZHOU, CN

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Patents Grantslast 30 patents

Information Patent Grant
Automatic rheological parameter measuring system and use method for...
- Patent number 11,946,327
- Issue date Apr 2, 2024
- YANGTZE UNIVERSITY
- FeiFei Zhang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mud circulation system for reducing the swab pressure while trippin...
- Patent number 11,021,919
- Issue date Jun 1, 2021
- Yangtze University
- Feifei Zhang
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DEVICE AND METHOD FOR DIAGNOSING THE RISK OF INSUFFICIENT HOLE CLEA...
- Publication number 20230184045
- Publication date Jun 15, 2023
- Yangtze University
- FEIFEI ZHANG
- E21 - EARTH DRILLING MINING
Information Patent Application
AUTOMATIC RHEOLOGICAL PARAMETER MEASURING SYSTEM AND USE METHOD FOR...
- Publication number 20220098942
- Publication date Mar 31, 2022
- YANGTZE UNIVERSITY
- FeiFei Zhang
- E21 - EARTH DRILLING MINING
Information Patent Application
MUD CIRCULATION SYSTEM FOR REDUCING THE SWAB PRESSURE WHILE TRIPPIN...
- Publication number 20200240222
- Publication date Jul 30, 2020
- Yangtze University
- FEIFEI ZHANG
- E21 - EARTH DRILLING MINING